Improvement in pumps



UNITED STATES PATENT OFFICE..

JOHN MUNSON, OF SAN JOS', CALIFORNIA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 43,121, dated June 14,1864` To aZZ whom it may' concern:

Be it known that I, JOHN MUNsoN, ot San Jos, in the county of SantaClara ,and State of California, have invented certain new and usefulImprovements in Pumps; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe vaccompanying drawings, making a part of this specification, inwhich- Figurelis a vertical section of my invention taken in the line wfr, Fig. 2 5 Fig. 2 a vertical section of the same taken in the line yy, Fig. 1.

bimilar letters of reference indicate corresponding parts in the twofigures.

This invention consists, first, in a novel tripvalve arrangement foradmitting of the escape of water from the eduction-pipe of the pumpafter each operation of tne same, whcreby the pump is prevented frombeing inoperative in winter by freezing, and fresh, cool water alwaysobtained in summer.

The invention consists, second, in a novel construction of the plungerof the pump, whereby the former is made to serve as an air vessel aswell as a plunger and considerable expense saved in the construction ofthe pump, and the latter also materiallyr simplified.

The invention consists, third, in the employment or use of a capattached to the pumpbox at the top of the well or cistern and providedwith a brake-joint, as hereinafter fully shown and described, whereby avery simple, economical, and durable means is obtained for a pump-xtureat the top ofthe well or cistern.

To enable those skilled 'in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the cylinder of thc pump,

which may be of any suitable dimensions and submerged near the bottomofthe well or cistern. The pumpcylinder has an opening, a. in its side,near its upper end, and the lower end of the eduction-pipe shown in red,is attached to it, the opening a forming a communication between thepump'cylinder and the eduction-pipe, the latter extending upward to thetop ot' the well or cistern and passing through the pump-box, which isalso shown in red.

B represents a hollowplunger, which is less in diameter than thepump-cylinder A, and

has a piston, O, attached to its lower end. The piston is madeseparately from the plunger, and is attached to it by bolts D D, theheads b b of which are fitted between lugs c, cast at the inner sideofthe plunger, as shown clearly in Fig. 1, the bolts passing through thepiston and having nuts d ontheir lower ends. The piston is provided witha suitable packing, E, and also provided with a valve, F, openingupward. (See Fig. 1.) The lower end of the plunger B communicates at alltimes with the interior of the pump-cylinder A, a space or openingsbeing allowed between the piston and plunger, and the valveF is providedwith a stem, e, which works in a guide, f, at the lower part of theplunger.

G represents the check or retaining valve, which is-at the bottom (LX ofthe pump-cylinder. This valve is fitted or works on pivots g in a frame,H, the latter being secured to the bottom of the pump cylinder withpacking h interposed between. The frame His formed or cast with acentral projection, z', which eX- tends upward a suitable'distance, asshown in both gures. The object of this projection will be presentlyseen. Iis the tubular dange, which is directly underneath the valve G,and to which the induction-pipe, if any be used, is attached. The top ofthe pump-cylinder is provided withastufting-box, l', through which theplunger B works.

From the above description it will be seen that when the piston Oascends the valve F closes and a suction is produced in the pumpcylinderunderneath the piston, the valve G opening and the water passing intothe pumpcylinder, while the water in the pumpcylinder above the piston,which was drawn into it at the previous stroke, will be forced up theeduction-pipe through the opening a. During the downward movement of thepiston the valve F opens, and the water in the pump cylinder below thepiston -is displaced and forced upward through the eduction--pipe. Thusa continuous stream is forced upuad through the eduction-pipe. At theend ofthe pumping operation the piston is forced down to the bottom ofthe pump cylinder A and the projection t' causes the valve F to remainopen or prevents it from closing, while at the same tme one of thebolts, D, will strike one end of the valve G and cause it to open, asshown in red, Fig. 1, thereby allowing the water to Y escape, so thatthe Water in the eduetionpipe will reach the level of the surface ot thewater in the Well or cistern. By this means the eductionpipe isprevented from freezing up in Winter, and cool, fresh Water obtained insummer. The plunger, in consequence of being hollow, serves as al1air-chamber and renders-the flow of water from the eductionpipe uniform.

J represents a cast-iron plate, which is secured to the upper end of thepump-box, and through which the upper end of the inductionpipe passes,as shown in red, Fig. 1. This plate J has a socket, K, attached to it bya pin, j. The socket K may be of cast-iron and composed of a dat plate,la, having a lip or flange, l, at one side oi' it and a projection, m.,at its innerend, to receive the bolt which connects the plunger-rod tothe socket K, as shown in red, Fig. 2. The pin j passes through an uprightlug, n, at one side oi' plate J, and the brake or handle ot' thepump, shown in red, is bolted to the socket K. By this arrangement aveiy simple, economical, and durable brake, jointis obtained.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The check or retaining; valve G, tted in the frame H, provided With aprojection, I, and arranged in relation With the valveF of the piston Cand the bolts D thereof, or other projection attached, solas to causeboth Valves to be opened and -remain open when the piston is at thebottom of the pump-cylinder, and thereby adniit ofthe escape of theWater, substantially as set forth. 2. rlhe hollow plunger B, attached tothe piston C to operate as an air vessel or chamber, as specified.

3. The plate J with the socket or brake-- joint K, attachedsubstantially as described.

JOHN MUNSON. Witnesses:

D. ROBERTSON, M. M. LIVINGSTON.

